数字密度计 meaning in Chinese

digital density meter
digital density metre

Standard test method for density and relative density of liquids by digital density meter
数字密度计测定液体密度和相对密度的标准试验方法
Test method for density and relative density of engine coolant concentrates and aqueous engine coolants by digital density meter
用数字密度计测定发动机冷冻剂浓缩物和含水发动机冷冻剂密度和相对密度的方法
Standard test method for density and relative density of engine coolant concentrates and aqueous engine coolants by digital density meter
用数字密度计对发动机冷冻剂的浓缩和水般的发动机冷冻剂的标准测试方法